21120101012222 has 16 divisors (see below), whose sum is σ = 32060007020832. Its totient is φ = 10433794291200.

The previous prime is 21120101012189. The next prime is 21120101012233. The reversal of 21120101012222 is 22221010102112.

It is a self number, because there is not a number n which added to its sum of digits gives 21120101012222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90454538 + ... + 90687725.

It is an arithmetic number, because the mean of its divisors is an integer number (2003750438802).

Almost surely, 2^{21120101012222} is an apocalyptic number.

21120101012222 is a deficient number, since it is larger than the sum of its proper divisors (10939906008610).

21120101012222 is a wasteful number, since it uses less digits than its factorization.

21120101012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181142963.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21120101012222 its reverse (22221010102112), we get a palindrome (43341111114334).

The spelling of 21120101012222 in words is "twenty-one trillion, one hundred twenty billion, one hundred one million, twelve thousand, two hundred twenty-two".